Process of making cloth-lined paper.



No. 747,445; PATENTED DEC. 22; 1903.

E. Y. LE PBVRE.

PROCESS OF MAKING CLOTH LINED PAPER.

APPLICATION FILED MAY 2, 1903. I0 MODEL.

WITNESSES. IN VENTOH N a c nnnms FETEIIS co, PNDfQ-LITHO. WASHINGTOUNITED STATES Patented December 22, 1903.

PATENT OFFICE.

PROCESS OF MAKING CLOTH-LINED PAPER.

SPECIFICATION formingpart of Letters Patent No. 747,445, dated December22, 1903.

Application filed May 2, 1903. Serial No. 155,311. (N0 specimens.)

To all whmn it may concern.

Be it known that I, EDWARD Y. LE FEVEE,a citizen of the United States,residing at Fallsburg, in the county of Sullivan and State of New York,have invented certain new and useful Improvements inProcesses of MakingCloth-Lined Paper; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The object of my process is to produce cloth-lined paper by a singlepassage of the cloth and paper through a paper-drying machine. One ofthe methods heretofore used in producing such a product consists infirst producing a dry sheet of paper and then putting a wet adhesivecoating, such as starch, on the paper, then running cloth onto the paperthus prepared, and then drying the double sheet in some dryingapparatus. Another method by which cloth-lined paper has been producedconsists in starching a sheet of cloth and drying it as a separateoperation, then bringing it to a paper-mill and running it onto a wetsheet of paper, which is then run through a regular paper-dryingmachine. It is thus seen that in each of the methods heretofore used thedouble sheet of clothlined paper is only obtained by one of the partshaving to go through a drying operation previous to the operation bywhich it is joined in the double sheet.

In my process I am able to accomplish the desired result in a moreeconomical manner, as I produce the cloth-lined paper by a singlepassage of the material through theregular paperdrying machine. Thedouble sheet is produced simultaneously with that of the sheet of paper..In order to accomplish this result, I proceed in the following manner:The Wet'pulp is formed as usual on the cylinder. It is then picked up bythe felt and taken to the first press. I add an adhesive medium, such asfinely-powdered flour, to the wet sheet of paper. On this wet sheet ofpaper, withthe flour on it, the raw sheet of clothis run and pressed.The double sheet with the adhesive medium between the paper and thecloth continues to run on the regular paper-machine, thus producing in asingle passage through a paper-drying machine the finished cloth-linedpaper.

In the accompanying drawing is diagrammatically illustrated the novelpart of a convenient apparatus for carrying out my invention.

A is the vat.

B is the cylinder.

M M is the felt; C, the couch-roll; H H, suction-boxes; E E and E E, thepresses.

L L L L are felt-rolls.

G is the receptacle for holding the flour and is provided with openingsalong its lower edge.

I is a reel of cloth, and K K D are carryingrolls for same.

N N are the ordinary steam-driers of a paper-drying machine.

O is the finished sheet of cloth-lined paper.

In the operation of my process the paperpulp in the vat A is formed onthe cylinder B and is then picked up by the felt MM, passand felt-rollsL L. Between the couch-roll O and the cloth-roll D the powdered flour isadded to the wet sheet of paper by dropping from the receptacle G in acontinuous stream. The cloth on the reel I is continuously unwound andpassed over the rolls K K and D, when it then meets the Wet sheet ofpaper with the flour on it, and after passing over the rolls L L it ispressed by the press-rolls E E and E E. It is carried by the felt todriers N N N of the regular paper-drying machine, where the double sheetis finished.

' What I claim as my invention, and desire a to secure by LettersPatent, is-

1. The herein-described process of making cloth-lined paper whichconsists in forming a wet sheet of paper, then adding an adhesive mediumto said sheet of paper, then running a sheet of cloth onto said sheet ofpaper, then pressing and drying the double sheet thus produced, wherebya finished cloth-lined paper is produced.

2. The herein-described process of making cloth-lined paper whichconsists of forming a wet sheet of paper, then adding flour to saidsheet of paper, then running a sheet of cloth onto said sheet of paper,then pressing and drying the double sheet thus formed,where'by afinished cloth-lined paper is produced.

In testimony whereof I hereto affix my signature in the presence of twowitnesses.

EDWARD Y. LE FEVRE.

Witnesses:

' HERBERT H. WING,

B. B. WILLIAMS.

mg over couch-roll O, and suction-boxes H H

